Connecting rod



Y Patented ,lune 8, i925.

CHARLES ALBERT" MYERS, or''.rAivrAeUA,` PENNSYLVANIA.

ooNNEo'rING non.

Application led September 8, 1925. Serial No. 55,127.

My invention relates to improvements in connecting rods and itconsists in the combinations, herein described and claimed.

An object of the invention is thefprovision of a connec\ing rod which is `adapted to be connected with a piston in such manf ner that a universal connection is established between the connecting rod and the piston.

A further object of the invention is the provision of a connecting rod which lis adapted to be connected in a simple and facile manner to the piston rod.

Other objects and advantages of the invention will be apparent from the following description, considered in conjunction with the accompanying drawings, in which:

Figure 1 is a schematic perspectiveview of the piston and connecting rod construc tion, y

Figure 2 is a longitudinal vertical section through the piston and connecting rod with the trunnion block of the connection shown in elevation, Figure 3 isa section along the line 3-3 of Fig. 2, and

Figure L1 is a section along the line i-4 of Fig. 3. y The numeral 1 designates a piston of the usual hollow construction and open at its lower end. The piston is formed with a pair of diametrically opposite openings 2 from which alined tubular bosses 3 extendv radially inwardV toward the longitudinal center line of the piston butterminate short 4of the longitudinal centerline of the piston, leaving a space of considerable width cen- 'trally of the piston between therinner ends of the bosses 3. f

The connecting rod has a shank or body formed with a substantially U-shaped iead portion '5 having upwardly extending arms 6, each of which is formed with furcations 7 produced by slotsB which extend at right angles to the direction of length of the space between the arms 6. The wall of each slot 8 is concavely curved atthe lower end of the slot as indicated at 9 to provide a seat for a tubular bushing 10 which is circular in cross sectional inner and outer outlines. A

The bushing 10 is provided intermediate its length with a transverse groove 11 in the I upper part of the outer wall of the bushing constructions and arrangements 10. A retaining pin 12 is shown as being the shank of a bolt that extends through alined openings 13 in the upper end portions of the furcations 7, and engages the groove 11 to hold the bushing 10 against turning in the seat 9.

A trunnion block 14 has a pair of oppos sitely extending alined tubular trunnions 15 having'the end portions lthereof journalled in the bushings 16. The trunnion block also has a bore 16 extending at right angles to the axial line of the trunnions. A bushing l17 is secured in the bore 16. The inner diameter of the bushing 17 is approximately equal to the diameter of the boreof each of thebosses 3 and the connecting rod is adapted to be insertedv in the piston until the block 111 is disposed between the inner ends of the bosses 3 with the ends of the bushing 17, close to the inner ends of the bosses 3 and in axial alinement with the latter.

A tubular pin 13 extends through the alined bores of the bosses 3 and the bushing 17, whereby the trunnion block will be pivotally attached to the piston. f A

From.' the foregoing `description of the various parts of the device, the operationl thereof maybe readily understood. The connecting rod canswing relatively to the piston about axes which extend at right vangles to each other andtherefore no lateral stress on the piston will result from the reoiprocation of the connecting rod. It of course will be understood that the lower end portion of the connecting rod willbe adapted in any suitable known manner, not illustrated in the drawings, to be connected with a crank shaft, also not shown, s0 motion will be transmitted from the crank shaft through the connecting rod to the piston. Openings may be provided in the bosses 3 as at 19 and in any of the remaining tubular bearing members of the device to permit lubricant to be fed to the relatively moving surfaces of the device.

Cbviously, the invention is susceptible of embodiment in forms other than that which is illustrated 4in the accompanying drawings, and I therefore consider as my own all such modilications and adaptations the appended claim.

I claim: p

A connecting rod having a shank formed with a substantially U-shaped l upper end portion, each of the arms of said U-shaped tion of the peripheral Wall thereof and the upper end yportion being bifuron-ted by a upper end portions ofthe ureationsof said vertiozt1s1ot,'the-wa11 ofthe lower-end por- 'arni having Mined openings, fanti 'a bolt 10 tion of said slot being conoavely curved, a having a shank extending through said bushing adapted to it in said oonoavely openings and engaging Said groove to hold Curved portion o'f the slot, the bushing hav- Vsaid `bushing against turning in said slot.

ing a transverse groove in the upper por- A CHARLES ALBERT MYERS. 

